Disclosed in a mobile communication system, and more particularly a method of re-transmitting data through a reverse link in a packet data system using ARQ and a packet transmitting method and apparatus by which transmission efficiency is enhanced. In this manner, the examination of S PLLs can be performed in a single test, and thereby it can reduce the time needed to examine PLLs in the semiconductor integrated circuit having a plurality of PLLs. A support assembly is spaced from the base container when the upper container is displaced from the covering relation over the upper opening of the base container and wheels are disposed toward a lower portion of the container assembly.